// Copyright (c) 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <GLES2/gl2.h>

#include "gpu/command_buffer/service/shader_translator_cache.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace gpu {
namespace gles2 {

    TEST(ShaderTranslatorCacheTest, InitParamComparable)
    {
        // Tests that ShaderTranslatorInitParams padding or padding of its
        // members does not affect the object equality or ordering.

        ShBuiltInResources a_resources;
        memset(&a_resources, 88, sizeof(a_resources));
        ShInitBuiltInResources(&a_resources);

        ShBuiltInResources b_resources;
        memset(&b_resources, 77, sizeof(b_resources));
        ShInitBuiltInResources(&b_resources);

        EXPECT_TRUE(memcmp(&a_resources, &b_resources, sizeof(a_resources)) == 0);

        ShCompileOptions driver_bug_workarounds = SH_VALIDATE;

        char a_storage[sizeof(ShaderTranslatorCache::ShaderTranslatorInitParams)];
        memset(a_storage, 55, sizeof(a_storage));
        ShaderTranslatorCache::ShaderTranslatorInitParams* a = new (&a_storage) ShaderTranslatorCache::ShaderTranslatorInitParams(
            GL_VERTEX_SHADER, SH_GLES2_SPEC, a_resources, SH_ESSL_OUTPUT,
            driver_bug_workarounds);

        ShaderTranslatorCache::ShaderTranslatorInitParams b(
            GL_VERTEX_SHADER, SH_GLES2_SPEC, b_resources, SH_ESSL_OUTPUT,
            driver_bug_workarounds);

        EXPECT_TRUE(*a == b);
        EXPECT_FALSE(*a < b || b < *a);

        memset(a_storage, 55, sizeof(a_storage));
        a = new (&a_storage) ShaderTranslatorCache::ShaderTranslatorInitParams(b);

        EXPECT_TRUE(*a == b);
        EXPECT_FALSE(*a < b || b < *a);
    }
} // namespace gles2
} // namespace gpu
